In your email client, do you use the server's IP address or a FQDN? Try the IP address for now to rule out DNS problems.
What's the output of

Code:

netstat -tap

on your server? Is port 110 open in the firewall?

Click to expand...

Yes I have tried the IP address of the PC box in question, I'm unsure about the firewall, I was wondering the same thing weather the box was allowing me in to check mail. I know I have the ports open on my router which are ( 25, 100 )

You can use any email client (Outlook, Thunderbird, ...). Use rockinghamgateway.com as SMTP and POP3 server, and don't forget to enable "Server requires authentication." because otherwise you'll get "Relay access denied" or something like that when you try to send mails.